ComfortDelgro Bus Volvo B9L (PC4051X) – NUS ISB Route B1 ComfortDelgro Bus Volvo B9L (PC4051X) – NUS ISB Route B1 ComfortDelgro Bus Volvo B9L (PC4051X) – NUS ISB Route B1
17 May 2024 - 31 October 2025 Bus Service Diversion for Early Closure of Jurong West Avenue 4 for JRL Works